THE HAPPY COG wheel works.

Perfectionism to the 360th degree.

We are The Happy Cog wheel works, an independent bicycle business specialising in hand building, renting and selling bicycle wheels.

You can Rent our premium Reynolds carbon fiber wheels for your next ride, race, sportive, triathlon or training holiday. You can talk to us about your Custom-Built wheels and have us handcraft them for you. You can buy our hand built Ready-Built wheels. You can buy parts and accessories. You can have your bike built & serviced …..or you can talk to us about anything wheel or bike related over a cup of tea anytime you're passing!

Advice is always free.

Call us on 07871 263 469 or email us at



Custom built by us to the highest standards these wheels are the ultimate upgrade to any bike. Race or Recreation, On Road or Off.


Our hand crafted wheels built in-house to the same high standards as our custom wheels but using our tried and tested, recommended parts. These wheels are available now and ready for immediate collection or dispatch.

Race-Day Rental

Whatever type of racing or training you’re planning to do, you can hire our Reynolds premium carbon fiber wheels.

Customer Quotes

Hey Fraser
...The Wheels are Lovely; true, round, smooth rolling and they keep getting comments on how good they look...Thumbs Up!
— Gordy Mackenzie
Fraser built the Foil up, and hand built the wheels. Foil’s are notoriously stiff and unforgiving, the carbon wheels Fraser built are stiff, light and help the Foil take off when I put some power down. The tubeless set up makes what’s supposed to be a brutal frame a joy to ride for century distances.
— Stu Mcintosh
I bought my first set of hand built wheels from The Happy Cog this autumn - Archetype rims on Dura Ace hubs. Service was quick (Fraser actually brought them to a CX race for me). They’re still perfectly true after a few months of bashing around in the woods. If you’re in the market for a quality set of hand built wheels give The Happy Cog a shout.
— Gordon Watt